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AWS BNi-1 vs. ACI-ASTM CE8MN Steel

AWS BNi-1 belongs to the nickel alloys classification, while ACI-ASTM CE8MN steel belongs to the iron alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-1 and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Poisson's Ratio 0.3
0.27
Shear Modulus, GPa 70
80
Tensile Strength: Ultimate (UTS), MPa 450
750

Thermal Properties

Latent Heat of Fusion, J/g 360
300
Melting Completion (Liquidus), °C 1040
1440
Melting Onset (Solidus), °C 980
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 55
21
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 8.8
4.2
Embodied Energy, MJ/kg 120
58
Embodied Water, L/kg 240
180

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16
27
Strength to Weight: Bending, points 16
23
Thermal Shock Resistance, points 15
21

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 2.8 to 3.5
0
Carbon (C), % 0.6 to 0.9
0 to 0.080
Chromium (Cr), % 13 to 15
22.5 to 25.5
Cobalt (Co), % 0 to 0.1
0
Iron (Fe), % 4.0 to 5.0
56 to 66.4
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.5
Nickel (Ni), % 69.8 to 75.7
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.040
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 4.0 to 5.0
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.040
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0